question #2 Sahih Muslim 608a, Book 5, Hadith 208 : How does the timing of a prayer affect its validity according to Islamic teachings?

The Messenger of Allah (ﷺ) said: He who finds one rak’ah at dawn before the rising of the sun, he in fact finds the dawn prayer. and he who finds one rak’ah of the afternoon prayer before sunset, he in fact finds the afternoon prayer.