Zuhd of our beloved prophet صلى الله عليه و سلم

﴿وَلاَ تَمُدَّنَّ عَيْنَيْكَ إِلَى مَا مَتَّعْنَا بِهِ أَزْوَجاً مِّنْهُمْ زَهْرَةَ الْحَيَوةِ الدُّنْيَا لِنَفْتِنَهُمْ فِيهِ وَرِزْقُ رَبِّكَ خَيْرٌ وَأَبْقَى - وَأْمُرْ أَهْلَكَ بِالصَّلوةِ وَاصْطَبِرْ عَلَيْهَا لاَ نَسْأَلُكَ رِزْقاً نَّحْنُ نَرْزُقُكَ وَالْعَـقِبَةُ لِلتَّقْوَى ﴾

(131. And strain not your eyes in longing for the things We have given for enjoyment to various groups of them, the splendor of the life of this world, that We may test them thereby. But the provision of your Lord is better and more lasting.) (132. And enjoin Salah on your family, and be patient in offering them. We ask not of you a provision: We provide for you. And the good end is for those who have Taqwa.)

-à This is from tafsir ibn kathir(abridged) :

﴿وَرِزْقُ رَبِّكَ خَيْرٌ وَأَبْقَى﴾

(But the provision of your Lord is better and more lasting. ) In the Sahih it is recorded that `Umar bin Al-Khattab entered upon the Messenger of Allah while he was in the small room in which he had separated himself from his wives after he had vowed to stay away from them. When he came in, he saw him (the Prophet ) lying down upon a sandy straw mat. There was nothing in the house except a pile of sant tree pods and some hanging equipment. `Umar's eyes filled with tears (upon seeing this), so the Messenger of Allah said to him,

«مَايُبْكِيكَ يَا عُمَرُ؟»

(What makes you cry, O Umar) He replied, "O Messenger of Allah, verily Kisra and Caesar are living in their luxurious conditions, yet you are the chosen Friend of Allah amongst His creation'' The Prophet said,

«أَوَ فِي شَكَ أَنْتَ يَا ابْنَ الْخَطَّابِ؟ أُولَئِكَ قَوْمٌ عُجِّلَتْ لَهُمْ طَيِّبَاتُهُمْ فِي حَيَاتِهِمُ الدُّنْيَا»

(Do you have doubt, O son of Al-Khattab Those people have had their good hastened for them in the life of this world.) Thus, the Prophet was the most abstinent of people concerning worldly luxuries, even though he had the ability to attain them. If he acquired anything of worldly treasures he would spend it on this and that for the servants of Allah. He would never save anything for himself for the next day. Ibn Abi Hatim reported from Abu Sa`id that the Messenger of Allah said,

«إِنَّ أَخْوَفَ مَا أَخَافُ عَلَيْكُمْ مَا يَفْتَحُ اللهُ لَكُمْ مِنْ زَهْرَةِ الدُّنْيَا»

(Verily, the thing I fear most for you all is what Allah will allow you to acquire of the splendor of this world. ) They (the Companions) said, "What is the splendor of this world, O Messenger of Allah'' He said,

«بَرَكَاتُ الْأَرْض»

(The blessings of the earth.) Qatadah and As-Suddi said, "The splendor of this worldly life means the beautiful adornments of the life of this world.'' Qatadah said,

﴿لِنَفْتِنَهُمْ فِيهِ﴾

(that We may test them thereby.) "So that We may put them to trial.'' Concerning Allah's statement,

﴿وَأْمُرْ أَهْلَكَ بِالصَّلوةِ وَاصْطَبِرْ عَلَيْهَا﴾

(And enjoin the Salah on your family, and be patient in offering them.) This means to save them from the punishment of Allah by the establishment of the prayer, and you also be patient in performing it. This is as Allah says,

﴿يأَيُّهَا الَّذِينَ ءَامَنُواْ قُواْ أَنفُسَكُمْ وَأَهْلِيكُمْ نَاراً﴾

(O you who believe! Ward off yourselves and your families against a Fire (Hell).) ﴿66:6﴾ Ibn Abi Hatim recorded that Zayd bin Aslam reported from his father that he and Yarfa' would sometimes spend the night at `Umar bin Al-Khattab's. `Umar had a certain time of night that he would get up and pray. However, sometimes he would not get up for it. Then, we would say, "He is not going to get up like he usually does.'' When he would awaken, he would make his family get up as well. He would say,

﴿وَأْمُرْ أَهْلَكَ بِالصَّلوةِ وَاصْطَبِرْ عَلَيْهَا﴾

(And enjoin the Salah on your family, and be patient in offering them.)'' Allah said;

﴿لاَ نَسْأَلُكَ رِزْقاً نَّحْنُ نَرْزُقُكَ﴾

(We ask not of you a provision: We provide for you.) This means that if you establish the prayer, your sustenance will come to you from where you did not expect. This is as Allah says,

﴿وَمَن يَتَّقِ اللَّهَ يَجْعَل لَّهُ مَخْرَجاًوَيَرْزُقْهُ مِنْ حَيْثُ لاَ يَحْتَسِبُ﴾

(And whosoever has Taqwa of Allah, He will make a way for him to get out (from every difficulty). And He will provide him from (sources) he never could imagine.) ﴿65:2-3﴾ Allah also says,

﴿وَمَا خَلَقْتُ الْجِنَّ وَالإِنسَ إِلاَّ لِيَعْبُدُونِ ﴾

(And I (Allah) created not the Jinn and mankind except that they should worship Me (Alone).) until,

﴿إِنَّ اللَّهَ هُوَ الرَّزَّاقُ ذُو الْقُوَّةِ الْمَتِينُ ﴾

(Verily, Allah is the All-Provider, Owner of Power, the Most Strong.) ﴿51:56-58﴾ Thus, Allah says,

﴿لاَ نَسْأَلُكَ رِزْقاً نَّحْنُ نَرْزُقُكَ﴾

(We ask not of you a provision: We provide for you.) Verily, At-Tirmidhi and Ibn Majah recorded that Abu Hurayrah said that the Messenger of Allah said,

«يَقُولُ اللهُ تَعَالى: يَا ابْنَ آدَمَ تَفَرَّغْ لِعِبَادَتِي أَمْلَأْ صَدْرَكَ غِنىً وَأَسُدَّ فَقْرَكَ، وَإِنْ لَمْ تَفْعَلْ، مَلَأْتُ صَدْرَكَ شُغْلًا وَلَمْ أَسُدَّ فَقْرَك»

(Allah, the Exalted, says, "O son of Adam, perform My worship and I will fill your chest with wealth and fulfill your needs. If you do not do so, then I will fill your chest with toil and I will not fulfill your needs.'') It is also reported from Zayd bin Thabit that he heard the Messenger of Allah saying,

«مَنْ كَانَتِ الدُّنْيَا هَمَّهُ فَرَّقَ اللهُ عَلَيْهِ أَمْرَهُ، وَجَعَلَ فَقْرَهُ بَيْنَ عَيْنَيْهِ، وَلَمْ يَأْتِهِ مِنَ الدُّنْيَا إِلَّا مَا كُتِبَ لَهُ، وَمَنْ كَانَتِ الْآخِرَةُ نِيَّتَهُ، جَمَعَ لَهُ أَمْرَهُ وَجَعَلَ غِنَاهُ فِي قَلْبِهِ، وَأَتَتْهُ الدُّنْيَا وَهِيَ رَاغِمَة»

(Whoever makes the worldly life his major concern, then Allah will scatter his situation for him (i.e. make it difficult) and his poverty will be placed between his eyes. He will not get from this world anything except that which has already been written for him. Whoever makes the Hereafter his intention, then his situation will be gathered for him (i.e. made easy) and his wealth will be placed in his heart. The worldly life will come to him anyway (in spite of his not seeking it).) Concerning Allah's statement,

﴿وَالْعَـقِبَةُ لِلتَّقْوَى﴾

(And the good end is for those who have Taqwa.) This means the good end in this life and in the Hereafter. In the Hereafter the good end will be Paradise for whoever feared Allah.

 486. `Abdullah bin Mas`ud (May Allah be pleased with him) reported: Messenger of Allah (sallallaahu alayhi wa sallam) slept on a straw mat and got up with the marks left by it on his body. Ibn Mas`ud (May Allah be pleased with him) said, “O Messenger of Allah! Would that you make us spread out a soft bedding for you.” He (sallallaahu alayhi wa sallam) replied, “What have I to do with the world? I am like a rider who had sat under a tree for its shade, then went away and left it.”
[At-Tirmidhi].

Commentary: Beside mentioning the piety of the Prophet (sallallaahu alayhi wa sallam), this Hadith tells in a very eloquent manner the reality of this world by means of an example.

The Bed of the Prophet صلى الله عليه و سلم

'Aisha رضي الله عنها described the humble and modest nature of the bed of the Prophet Mohammad صلى الله عليه و سلم, she stated:

"The bed of the Prophet صلى الله عليه و سلم that he used to sleep upon was nothing other than tanned leather (tanned animal skin) padded with strands extracted from the trunks of palm trees". 

        [Bukhary 6454, Muslim 2082]

It is certainly thought provoking, the final messenger sent with the final revelation, the best of mankind, yet his bed is of the most humble nature imaginable. 

‎الشمائل ص٣٥٤