وَحَدَّثَنِي عَنْ مَالِكٍ، أَنَّهُ بَلَغَهُ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏"‏ مَا مِنْ دَاعٍ يَدْعُو إِلَى هُدًى إِلاَّ كَانَ لَهُ مِثْلُ أَجْرِ مَنِ اتَّبَعَهُ لاَ يَنْقُصُ ذَلِكَ مِنْ أُجُورِهِمْ شَيْئًا وَمَا مِنْ دَاعٍ يَدْعُو إِلَى ضَلاَلَةٍ إِلاَّ كَانَ عَلَيْهِ مِثْلُ أَوْزَارِهِمْ لاَ يَنْقُصُ ذَلِكَ مِنْ أَوْزَارِهِمْ شَيْئًا ‏"‏ ‏.‏

Yahya related to me from Malik that he had heard that theMessenger of Allah, may Allah bless him and grant him peace, said, "Noone calls to guidance without having the same reward as those whofollow him without diminishing their rewards at all. And no one callsto error without having the same burdens as they do withoutdiminishing their burdens at all." Translation Not Available

Book Ref: Muwatta Imam Malik Book 15 Hadith 513
Web Ref:  Muwatta Imam Malik Book 15 Hadith 41