Obligations are according to ability

What I have forbidden for you, avoid. What I have ordered you [to do], do as much of it as you can. For verily, it was only the excessive questioning and their disagreeing with their Prophets that destroyed [the nations] who were before you.

عَنْ أَبِي هُرَيْرَةَ عَبْدِ الرَّحْمَنِ بْنِ صَخْرٍ رَضِيَ اللهُ عَنْهُ قَالَ: سَمِعْت رَسُولَ اللَّهِ صلى الله عليه و سلم يَقُولُ: مَا نَهَيْتُكُمْ عَنْهُ فَاجْتَنِبُوهُ، وَمَا أَمَرْتُكُمْ بِهِ فَأْتُوا مِنْهُ مَا اسْتَطَعْتُمْ، فَإِنَّمَا أَهْلَكَ الَّذِينَ مِنْ قَبْلِكُمْ كَثْرَةُ مَسَائِلِهِمْ وَاخْتِلَافُهُمْ عَلَى أَنْبِيَائِهِمْ . رَوَاهُ الْبُخَارِيُّ [رقم:7288]، وَمُسْلِمٌ [رقم:1337].

3an ‘abi hurairah 3abdir-RaHmani ibn Sakhr raDhiy Allahu 3anhu qaal: sami3tu RasoolAllahi Sal Allahu 3alaihi wa sallama yaqool:

((maa nahaytukum 3anhu faajtanibuhu, wa maa ‘amartukum bihi faa’too minhu maa staTa3tum, faa ‘innamaa ahlaka ‘aladheena min qablikum kathratu masaa’ilihim wakhtilaafuhum 3alaa ‘anbiyaa’ihim)).

Rawaah ul Bukhaari wa Muslim.