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: "Indeed, this religion is easy, and whoever overburdens himself in this religion will be overcome by it. So remain steadfast, be moderate, give glad tidings, and seek help (in worship) in the morning, in the evening, and for a part of the night."