Abu Hurairah (May Allah be pleased with him) reported:
The Prophet (ﷺ) said, "When one of you gets up at night to perform (Tahajjud) prayer, let him start Salat with two short Rak'ah."[Muslim]. (RU)
App reference (RU): Book 9, Hadith 189 (RU)
Arabic/English book reference (RU): Book 9, Hadith 1179 (RU)