Hadith on Sincerity: Good will protects from deception

Abu Sa’id al-Khudri reported: The Messenger of Allah, peace and blessings be upon him, said, “There are three by which a believer will not be deceived: sincerity in deeds for Allah, good will to the Muslims, and keeping to their community.

Source: Musnad al-Shāmiyyīn 1279

Grade: Sahih li ghayri (authentic due to external evidence) according to Al-Albani

عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ ثَلاثٌ لا يُغِلُّ عَلَيْهِنَّ الْمُؤْمِنُ إِخْلاصُ الْعَمَلِ لِلَّهِ وَمُنَاصَحَةُ الْمُسْلِمِينَ وَلُزُومُ جَمَاعَتِهِمْ

1279 مسند الشاميين للطبراني

4 المحدث الألباني خلاصة حكم المحدث صحيح لغيره في صحيح الترغيب