"The Messenger of Allah ﷺturned to face us when he stood up to pray, before he said the Takbir and said: 'Make your rows straight and come close to one another, for I can see you behind my back."' (Using translation from Nasāʾī 814)
أَقْبَلَ عَلَيْنَا رَسُولُ اللهِ ﷺ بِوَجْهِهِ قَبْلَ أَنْ يُكَبِّرَ فِي الصَّلَاةِ فَقَالَ أَقِيمُوا صُفُوفَكُمْ وَتَرَاصُّوا فَإِنِّي أَرَاكُمْ مِنْ وَرَاءِ ظَهْرِي