Sayyiduna Anas bin Malik (may Allah be pleased with him) narrates that the Prophet (peace and blessings of Allah be upon him) said: "There are three things, whoever has them will taste the sweetness of faith. That a person loves Allah and His Messenger more than anything else besides them; that he loves a people only for the sake of Allah; and that he would rather be thrown into the fire than return to disbelief after Allah has saved him from it."
Hadith Referenceصحیح ابن حبان / كتاب الإيمان / 237
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح - «تخريج فقة اليسرة» (198)، «الروض النضير» (52): م.فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده صحيح على شرط مسلم.