Silsilat al-Ahadith al-Sahihah

It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "There is eagerness and desire for Islam, and after every desire there comes eventually laziness and decrease. (See) If the one who desires good deeds walks on the right path and adopts moderation, then have hope regarding him (that he will be an accepted servant of Allah Almighty), and if (he is so excessive in worship that) people point towards him with their fingers, then do not have hope regarding him (that he will be a righteous person)."