Muwatta Malik· موطأ مالك
Muwatta Malik 395
Zayd ibn Thabit entered the mosque and found the people in ruku, so he went…
মুয়াত্তা ইমাম মালিক ৩৯৫ · মুয়াত্তা মালিক•Shortening the Prayer
حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنِ ابْنِ شِهَابٍ، عَنْ أَبِي أُمَامَةَ بْنِ سَهْلِ بْنِ حُنَيْفٍ، أَنَّهُ قَالَ دَخَلَ زَيْدُ بْنُ ثَابِتٍ الْمَسْجِدَ فَوَجَدَ النَّاسَ رُكُوعًا فَرَكَعَ ثُمَّ دَبَّ حَتَّى وَصَلَ الصَّفَّ .
Narrator: Yahya
Yahya related to me from Malik from Ibn Shihab that Abu Umama ibn Sahl ibn Hunayf said, "Zayd ibn Thabit entered the mosque and found the people in ruku, so he went into ruku and then moved slowly forward until he reached the row- Salim al-HilaliMauquf Sahih