Abu Sa’Id al-Khudri said; The Messenger of Allah ﷺ saw a tendency among his companions to go to the back. He said to them; come forward and follow my lead, and let those who come after you follow your lead people will continue to keep to the back till Allah would put them at the back. (Using translation from Abū Dāʾūd 680)   

أَنَّ رَسُولَ اللهِ ﷺ رَأَى فِي أَصْحَابِهِ تَأَخُّرًا فَقَالَ لَهُمْ تَقَدَّمُوا فَأْتَمُّوا بِي وَلْيَأْتَمَّ بِكُمْ مَنْ بَعْدَكُمْ لَا يَزَالُ قَوْمٌ يَتَأَخَّرُونَ حَتَّى يُؤَخِّرَهُمُ اللهُ  

‘A’ishah reported the Messenger of Allah ﷺ as saying the people will continue to keep themselves away from the front row until Allah will keep them away (from the front) in the Hell-fire. (Using translation from Abū Dāʾūd 679)   

قَالَ رَسُولُ اللهِ ﷺ لَا يَزَالُ قَوْمٌ يَتَأَخَّرُونَ عَنِ الصَّفِّ الْأَوَّلِ حَتَّى يُؤَخِّرَهُمُ اللهُ ﷻ فِي النَّارِ