Is my son who was breastfed one filling time by my aunt considered a brother to her children?
                                The baby who was suckled five sporadic times by a woman is considered a son/daughter of hers.
                             
                        
                            
                                
                                Is it permissible for a woman who is in her confinement to fast upon seeing blood signs that are neither black, nor red ?
                                Brownish, reddish, and yellowish discharges are all considered confinement until there is no colored discharge which marks the end of confinement. Moreover, the aforesaid woman is prohibited from fasting until she attains ritual purity. And Allah Knows Best.
                             
                        
                            
                                
                                Do the Jinn have anything to do with the disappearance of objects?
                                Jinn are one of Allah creatures, and whosoever lost anything should look for it and never accuse niether the Jinn nor humans of stealing it. And Allah Knows Best.
                             
                        
                            
                                
                                Is it permissible for a sick person to pray while sitting on a chair?
                                All perfect praise be to Allah, The Lord of the Worlds                                                                                                                                                                        It is permissible for a sick person, who is unable to stand up, to offer prayer while sitting on a chair. If he/she was unable to prostrate while on the chair, the he/she should pray while sitting on the ground, but if he/she was neither able to bow (Roku),nor to prostrate, then he can do them while sitting on the chair. And Allah Knows Best.