Fiqh-us-Sunnah Volume 5, Hajj and ‘Umrah, Fiqh 5.040.

Section : Excellence of Talbiyah.

Jabir reported that the Prophet (peace be upon him) said: “Whosoever makes intention to perform Hajj and pronounces talbiyah all day until sunset, Allah the Almighty will forgive his sins, and he will be free of sin as he was the day his mother gave birth to him.” (Ibn Majah)

Abu Hurairah reported that the Prophet (peace be upon him) said: “He who declares, ‘There is no God but Allah’ will get the good news of reward (for him), and he who magnifies Allah (or, says Allahu Akbar – Allah is the greatest) will receive the good news of reward (for him).” They asked: “O Prophet of Allah, is it the (good news of) Paradise?” He replied, “Yes.” (Narrated by At-Tabarani and Sa’id bin Mansur)

Sahl ibn Sa’ad reported that the Prophet (peace be upon him) said: “When any Muslim utters talbiyah, everything – every stone or every tree or every pebble – on his right side and on his left side responds with a (similar) talbiyah, until the whole earth resounds with it.” (Reported by Ibn Majah, Al-Baihaqi, Tirmizhi, Al-Hakim, who considers it a sound hadith)