من لا يحضره الفقيه, volume 2, page 136

Hadith.1959 - Abu Basir asked Imam (as) about suhoor for someone intending to fast, saying, "Is it obligatory?" Imam (as) replied: "There is no harm if one does not have suhoor if they wish. However, in the Month of Ramadan, it is better to have suhoor. I prefer that it not be abandoned in the Month of Ramadan."

Translation: Bab Ul Qaim Publications — attributed by Thaqalayn·The Arabic above is the original.

Hadith.1960 - The Prophet (peace be upon him and his family) said: "Strengthen yourselves for the fasting of the day by eating suhoor, and for the night prayer by taking a nap during the midday rest (qaylulah)."

Translation: Bab Ul Qaim Publications — attributed by Thaqalayn·The Arabic above is the original.

Hadith.1961 - It is narrated from Commander of the Faithful Imam Ali ibn Abi Talib (as) that the Prophet (sw) (peace be upon him and his family) said: "Indeed, Allah (swt), the Blessed and Exalted, and His angels send blessings upon those who seek forgiveness and those who partake in suhoor during the pre-dawn hours. So let one of you partake in suhoor, even if it is just a sip of water."

Translation: Bab Ul Qaim Publications — attributed by Thaqalayn·The Arabic above is the original.

Hadith.1962 - A man asked Imam Jafar ibn Muhammad Al-Sadiq (as), "I eat while I am unsure if dawn has risen." Imam (as) replied: "Eat until you are no longer in doubt."

Translation: Bab Ul Qaim Publications — attributed by Thaqalayn·The Arabic above is the original.

Hadith.1963 - Imam (as) said: "If people were to partake in suhoor and then break their fast only with water, they would be able to fast continuously throughout the year."

Translation: Bab Ul Qaim Publications — attributed by Thaqalayn·The Arabic above is the original.