Abu Bakrah said that he came to the mosque when the prophet ﷺ was bowing. So I bowed outside the row (before joining it). The prophet ﷺ said; May Allah increase your eagerness! But do not do it again.
أَنَّهُ دَخَلَ الْمَسْجِدَ وَنَبِيُّ اللَّهِ ﷺ رَاكِعٌ قَالَ فَرَكَعْتُ دُونَ الصَّفِّ فَقَالَ النَّبِيُّ ﷺ زَادَكَ اللَّهُ حِرْصًا وَلاَ تَعُدْ