When is fasting obligatory for a slave girl, and what are the signs of puberty?

Question:
This is a questioner who sent a question to the program, saying: I hope the Honorable Shaykh will answer my question. The questioner, Iman, says: What must I do now that I have reached puberty regarding the fasting for the days I missed when I was young, at the age of twelve? Honorable Shaykh?

Answer:
In the name of Allah, the Most Gracious, the Most Merciful. Praise be to Allah, Lord of the worlds, and may Allah send prayers and blessings upon our Prophet Muhammad, and upon his family and his Companions. As for the slave girl, when she reaches puberty, it is obligatory for her to fast, pray, and fulfill all other obligatory duties. Her reaching puberty occurs through one of the following matters. The first matter is menstruation; if she menstruates, she is ruled to have reached puberty. The Prophet (peace and blessings be upon him) said: without a head covering. By the menstruating woman, it is meant the one who has reached the age of menstruation. The minimum age at which a girl menstruates is nine years. If she menstruates, she becomes a woman, and it becomes obligatory for her to fast, pray, and fulfill all other religious obligations. If this slave girl left off fasting after the sign of puberty appeared in her, it is obligatory for her to make up the number of days she missed, and to feed a poor person half a sa' of food for each day for the delay in making up the fast. Likewise, a slave girl reaches puberty other than through menstruation; it occurs through the growth of coarse hair around the private parts. It also occurs through wet dreams, if she has a wet dream and discharges semen in the dream. It also occurs when she reaches the age of fifteen. All of these are signs of puberty. Menstruation is specific to the female, and the rest of the signs apply to both the female and the male. Yes.