Sayyiduna Abu Umamah bin Sahl bin Hunayf (may Allah be pleased with him) says that Sayyiduna Zayd bin Thabit (may Allah be pleased with him) entered the mosque while the imam was bowing, so he bowed before reaching the row and, walking on, joined the row.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 5219
Hadith Gradingمحدثین:صحيح
Hadith Takhrij«صحيح۔ أخرجه الطبراني في الكبير 242»