The ruling on the greeting of the mosque for one who intends to perform witr with a single unit

Question:
A man has witr to perform and intends to perform it with a single unit. He entered the mosque at night. So, is this unit, if he performs it...?

Answer:
No, he should first pray the greeting of the mosque, two units, and then perform witr. The greeting of the mosque is two units, and then he performs witr with one unit. The recommended practice is two units for the greeting of the mosque. Anything more is not part of the greeting of the mosque; it is voluntary.