Hafs bin Asim narrates from his father, from his grandfather Sayyiduna Umar (may Allah be pleased with him) that the Prophet Muhammad (peace and blessings be upon him) said: When the muezzin says «اللہ اکبر» «اللہ اکبر», then any one of you (i.e., the person hearing the adhan) should say «الله اكبر» «الله اکبر»; when he says «اشهد ان لا الله الا الله», then (the listener) should say «اشهد ان لا اله الا الله»; then when he says «اشهد ان محمد رسول اللہ», (the listener) should say «اشهد ان محمدا رسول الله»; then when he says «حی علی الصلوة», (the listener) should recite «لا حول ولا قوة الا باللہ»; then when he says «حی علی الفلاح», (the listener) should recite «لا حول ولا قوة الا باللہ»; then when he says «الله اکبر» «اللہ اکبر», (the listener) should say «اللہ اکبر» «اللہ اکبر»; then when he says «لا الله الا اللہ», the listener should say «لا الله الا اللہ»; so the person who responds to the adhan in this way will enter Paradise.