عَنْ عَدِيِّ بْنِ حَاتِمٍ (الطَّائِيِّ) رَضِيَ اللَّهُ عَنْهُ قَالَ: مَنْ أَمَّنَا فَلْيُتِمَّ الرُّكُوعَ وَالسُّجُودَ، فَإِنَّ مِنَّا الضَّعِيفَ وَالْكَبِيرَ وَالْمَرِيضَ وَالْعَابِرَ سَبِيلٍ وَذَا الْحَاجَةِ، هَكَذَا كُنَّا نُصَلِّي مَعَ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ
Sayyiduna Adi bin Hatim (may Allah be pleased with him) says: Whoever leads us in prayer should perform the bowing and prostration completely, because among us are the weak, the elderly, the sick, the traveler, and those with needs. We used to pray in this manner with the Messenger of Allah (peace and blessings be upon him).