Muwatta
Malik
موطأ مالك
09
Shortening the Prayer
كتاب قصر الصلاة فى السفر
Chapter 21: What to Do when Entering while the Imam is in Ruku
Muwatta Malik 401
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."
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 .