عَنْ أَنَسِ بْنِ مَالِكٍ رَضِيَ اللَّهُ عَنْهُ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ قَالَ: ((لَوْ يَعْلَمُ الْمُتَخَلِّفُونَ عَنْ صَلَاةِ الْعِشَاءِ وَصَلَاةِ الْغَدَاةِ مَا لَهُمْ فِيهِمَا لَأَتَوْهُمَا وَلَوْ حَبْوًا))
It is narrated from Sayyiduna Anas bin Malik, may Allah be pleased with him, that the Messenger of Allah, peace and blessings be upon him, said: If those who stay behind from the Fajr and ‘Isha prayers knew how much reward and merit there is for them in these two, they would surely come to the mosque even if they had to crawl on their buttocks.