Answer: Between the age of 9 and 15 according to the Islamic calendar, when she experiences nocturnal emission, or her menses start or she becomes pregnant, then she has reached puberty. If none of the above takes place, then as soon as she reaches the age of 15 according to the Islamic calendar, she has reached puberty. (ibid)
Question: From what aged-boys should girls observe veil?
Answer: The 31st verse of Sūraĥ An-Nūr (part 18) states:
اَ وِ ا لطِّفۡلِ ا لَّذِیۡنَ لَمۡ یَظۡہَرُ وۡ ا عَلٰی عَوۡ رٰتِ ا لنِّسَآ ءِ ۪
Or such children who do not know of women’s matters of shyness[1].
[Kanz-ul-Īmān (Translation of Quran)] (Part 18, Sūraĥ An-Nūr, verse 31)
In the commentary of this holy verse, the famous Quranic commentator, Ḥakīm-ul-Ummat, Muftī Aḥmad Yār Khān عَـلَيْهِ رَحْـمَةُ الْـمَنَّان wrote: (It is not necessary for a girl to observe veil with) small boys who are not yet close to puberty. So a girl should observe veil with a boy close to puberty (Murāĥiq). (Nūr-ul-’Irfān, pp. 564)
Honourable jurists رَحِمَهُمُ الـلّٰـهُ تَـعَالٰی stated: The youngest age of a girl close to puberty (Mushtaĥāt) is 9 and that of a boy close to puberty (Murāĥiq) is 12. (Rad-dul-Muḥtār, vol. 4, pp.118)
My master A’lā Ḥaḍrat رَحْمَةُ اللهِ تَعَالٰی عَلَيْه said: A girl under 9 does not have to observe veil, when she reaches 15 it is Wājib for her to observe veil with all non-Maḥram men. If, between the age of 9 and 15, there are indications of puberty then (in this case too), it is Wājib for her to