Rulings on the New-Born

Summarized Fatawaa

Is it recommended (mustaḥabb) for the one offering  a voluntary sacrifice (uḍḥiyyat taṭawwuʿ) to eat from its meat?

In the Name of Allah, and may peace and blessings be upon our Master, the Messenger of Allah.
 
It is highly recommended (Mustahabb) for the person offering a voluntary Udhiyah (sacrificial animal) to eat from its meat, but it is not an obligatory requirement (Wajib). Allah the Almighty says {what means}: "So eat of them and feed the needy who do not beg and the beggar. Thus have We subjected them to you that you may be grateful." (Al-Hajj/ 36)
 
"So eat of them": This directive is an encouraging recommendation, not a binding command.
 
The Qani’ (the needy who do not beg): Refers to a poor person who refrains from asking people for help out of dignity.
 
The Mu’tarr (the beggar): Refers to a poor person who explicitly asks others for assistance. And Allah the Almighty Knows Best.

What is the ruling on istinja' after urination, and is it done with water and soap or with water only?

Istinja' from urine and stool is obligatory. It is permissible to perform istinja' with water alone, or with toilet paper alone. The best way is with toilet paper then water. If one wishes to suffice with one of them, then water is better. And Allah the Almighty knows best.

What is the ruling on one who performs ablution or the ritual bath while having nail polish?

Nail polish must be removed before ablution or ritual bath so that water reaches what is beneath it, because it is a barrier that prevents water from reaching that area. This is based on the hadith narrated by Ali (may Allah be pleased with him) from the Prophet (peace be upon him): "Whoever leaves a hair's breadth of his body unwashed from major impurity, such and such will be done to him in the Fire." (Reported by al-Bukhari). And Allah the Almighty knows best.

Does excessive sleep during Ramadan invalidate fasting?

Sleeping a lot in Ramadan does not invalidate the fast, but a Muslim may miss out on great rewards from prayer, Quran recitation, and acts of worship due to excessive sleep.