What is the time of the morning's early hours, and is it true that reciting Surat Ya-Sin at this time makes supplications answered, and are there specific verses to be repeated for the purpose of facilitating marriage to a particular person?

The beginning of the day is its first part. The narrated Hadith (definition) about reciting Surat Ya-Sin at the beginning of the day to fulfill needs is weak because it is Mursal (disconnected) — (Ata' is not a Companion). There are no specific verses for fulfilling needs, but there is the Salat al-Hajah (definition) (Prayer of Need). We advise fearing Allah and not acting upon what has not been authenticated.