It was narrated from Anas that the Prophet (ﷺ) used to make his prayer very brief but still complete when leading people.
Sunan an-Nasa'i Book 10, Hadith 48
← Previous Hadith "When any one of you leads the people in prayer, let him make it short, for among them are the sick, the weak and the elderly. And when any one of you prays by himself, let him make it as long as he wishes."

Sunan an-Nasa'i Book 10, Hadith 47 Next Hadith → "I stand in prayer, then I hear a child crying, so I make my prayer brief, because I do not want to cause hardship for his mother."

Sunan an-Nasa'i Book 10, Hadith 49