It was asked from Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) that a person eats suhoor and thinks that the night is still continuing, although Fajr has already begun. He replied: Whoever can eat at the beginning of the day, can also eat at the end of it.
Hadith Referenceسنن سعید بن منصور / كتاب التفسير / 279
Hadith Gradingمحدثین:سنده ضعيف للانقطاع بين يحيى بن الجَزَّار وابن مسعود.
Hadith Takhrij«أخرجه سعيد بن منصور فى (سننه) برقم: 279، والبيهقي فى(سننه الكبير) برقم: 8104، وابن أبى شيبة فى (مصنفه) برقم: 9137، 9435»