Sunan Ibn Majah 208
It was narrated that Abu Hurairah said:
"The Messenger of Allah said: 'There is no caller who invites people to a thing but on the Day of Resurrection he will be made to stand next to that to which he called others, even if he only called one another person.'"
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا أَبُو مُعَاوِيَةَ، عَنْ لَيْثٍ، عَنْ بَشِيرِ بْنِ نَهِيكٍ، عَنْ أَبِي هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ ‏
"‏ مَا مِنْ دَاعٍ يَدْعُو إِلَى شَىْءٍ إِلاَّ وُقِفَ يَوْمَ الْقِيَامَةِ لاَزِمًا لِدَعْوَتِهِ مَا دَعَا إِلَيْهِ وَإِنْ دَعَا رَجُلٌ رَجُلاً ‏"‏ ‏.‏