Sayyidah Aishah Siddiqah (may Allah be pleased with her) says: The Prophet (peace and blessings be upon him) said: "Whoever changes his religion (by leaving Islam), kill him."
Al-Tabarani recorded it in al-Mu'jam al-Awsat. Its chain contains Abu Bakr al-Hudhali, who is da'if (weak).
It is narrated from Sayyiduna Mu'awiyah bin Haydah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever changes his religion, Islam, and becomes an apostate, kill him. Allah Almighty does not accept the repentance of a servant who disbelieves after accepting Islam."
Al-Tabarani (may Allah have mercy on him) recorded it, and all its narrators are thiqat (trustworthy).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الحدود والديات / 10573
Hadith Gradingمحدثین:إسنادہ صحیح
Hadith Takhrij«اخرجه الطبراني فى المعجم الكبير (419/19) أخرجه احمد فى المسند (5/5) ، أخرجه المعجم الأوسط للطبراني برقم: 8618»