Daily Islamic Rules Making a will on organ donation

If someone has instructed in their will that certain parts of their body be donated to the hospital, or a particular person, is such a will valid?

Daily Islamic Rules Necessary research for determining the marji‘ of taqlīd

I verified the competence of a certain mujtahid as marji‘ through the testimony of two just persons, is it obligatory for me to ask other persons about this matter also?

Daily Islamic Rules To deal on the condition of delay in payment

An agreement between the seller and the buyer was signed on condition that the price of the goods be settled after a grace period to ascertain whether or not the price was unfair. Is this type of transaction legally valid? And if it is, has the buyer the right to revoke the agreement?

Daily Islamic Rules Too much gap between an imam and the follower

Is it permissible for one who is joining at one of the ends of the first line to enter the congregational prayers prior to those between him and the imam?

Daily Islamic Rules Supplication in a language other than Arabic

In watr prayer [the one-rak‘ah prayer included in night prayer] when we raise our hands for qunūt and ask Allah for our needs, is it wrong if we ask for them in Persian?

Daily Islamic Rules shar‘ī distance in travelling

According to the Imam one should pray shortened and break the fast when travels a distance of eight shar‘ī farsakhs. If the going distance is less than four shar‘ī farsakhs but for returning one is forced to cover a distance of six shar‘ī farsakhs (due to unavailability of a car or difficulties of the road), should one shorten the prayer and break the fast?

Daily Islamic Rules Khums on a retirement pension

Are those who receive retirement pensions required to pay khums on their monthly salaries received throughout the year?

Daily Islamic Rules A female imam in congregational prayer

When can a woman be a congregational prayer leader?

Daily Islamic Rules To bury a bleeding corpse

A person dies in a collision or by falling from a height. What is the duty in case bleeding continues after death? Is it obligatory to wait till it stops by itself or by using medical means, or can it be buried despite the continuation of the bleeding?