Shulchan Arukh, Even HaEzer 58

כמה כסות יתן לבתו. ובו ב סעיפים:צוו חכמים שיתן אדם מנכסיו מעט לבתו וזהו הנקרא פרנסה המשיא את בתו סתם לא יפחות לה מכסות שפוסקין לאשת עני שבישראל בד"א שהיה האב עני אבל אם היה עשיר ה"ז ראוי ליתן לה כפי עשרו:

The Sages commanded that one must give a small part of his property to his daughter, and this is call "parnasa" (that is, livelihood). One who marries off his daughter without any stipulations, he may not give her anything less than [simple] clothing that is given to the wife of a poor Israelite. When does this apply? When the father [himself] is poor. However, if he is wealthy, then it is ideal that he gives to her according to his wealth.

התנה עם החתן להכניסה לו ערומה לא יאמר לכשתבא לביתי אכסנה אלא מכסה אותה ועודה בבית אביה:

If [the father] stipulates with the groomsman to marry her naked [that is, without the father providing her with clothing], [the groomsman] may not say: "When she comes into my house, I will clothe her." Rather, he must clothe her while she is still living in her father's house.