Are the granddaughters (son’s daughter/daughter’s daughter) of a man’s brothers or sisters included amongst his maḥrams?
Yes, they are his maḥrams. 
فتحرم بنات الإخوة والأخوات وبنات أولاد الإخوة والأخوات وإن نزلن (رد المحتار، دار عالم الكتب، ج٤ ص٩٩
وكذا الأخوات من أي جهة كن وبنات الأخوات وإن سفلن (فتاوى قاضيخان، دار الكتب العلمية، ج١ ص٣١٦
فأما النسب فهو الرحم المحرم وهم أربعة أصناف…والصنف الثالث: الإخوة والأخوات من أي وجه كانوا: لأب وأم أو لأب أو لأم وأولاد جميعهم وإن بعدوا (النتف فى الفتاوى، مؤسسة الرسالة، ج١ ص٢٥
There’s been a recent video released and participated in by many notable British ‘practising’ Muslims termed ‘Happy British Muslims’.
Perhaps the most concerning feature (for some of us at least) is that a prominent UK scholar is featured in it. He has since gone on record to say,”I’m delighted to see the outcome of the Happy British Muslims video, which has unlocked a remarkable tide of goodwill around the world, and significantly tilted the image of Muslims among many sceptics. Islamophobes must be grinding their teeth to see Muslims of different races and age-groups united by happiness. No one will produce a Sharia argument against jumping for joy!”
Could you please explain if there are any ‘sharia arguments’ that are violated in this video? Continue Reading
I knew a boy and we decided to do nikka on phone. But there was no imam or witness present. No meher was paid aftee that. We both knew the nikka was not valid since no witness was present. We did recite everything and also asked each other’s approval 3 times.
Recently I have heard, that nikka without witnesses is ACCEPTABLE in some circumstances. None of our parents or anyone was informed of this before. Is the nikka valid? Please help me I no longer talk to this boy. Continue Reading