I said, "Messenger of Allah, tell me something about Islam that I will not need to ask anyone else about after you."He said, "Say, 'I believe in Allah,' and then remain steadfast."
قلت: يا رسول الله، قل لي في الإسلام قولا لا أسأل عنه أحدا بعدك. قال: قل: آمنت بالله، فاستقم.