مناسك حج - مكارم شيرازى، ناصر - الصفحة ٢١٧ - Miscellaneous Issues of Hajj

Article ٣٤٨- Whenever a person perform Umrah al- Tamattu and comes out of Ihram and wants to abstain from doing the rituals of Hajj, he/ she has performed no sin if this is because of illness or another obstacle, and if it is the first year of his/ her ability of Hajj, it clears that he/ she has not been able of performing Hajj, and if Hajj has been obligated for him/ her before then he/ she should perform Hajj al- Tamattu completely in the next year.

But if the pilgrim abstain from performing Hajj without any excuse then he/ she has performed a sin( if has is obligatory or Mustahab )and there is nothing else on him/ her and should perform the obligatory Hajj in the next year and it is obligatory to perform Tawaf of Nisa and its prayer in any ways.

Article ٣٤٩- Killing bee and other insects like fly and mosquito is not permitted in the state of Ihram( as obligatory precaution )and if the pilgrim kills that insect deliberately, then he/ she should pay the atonement which is some food) for example one loaf of bread to a poor person (but it these insects causes him/ her harm or disturbance then killing them is permitted and has no atonement.