The Rites of Hajj, Practical Treatise and Rules

  1. Killing Insects ===================

Article 156

It is an obligatory precaution that a Muhrim does not kill insects like mosquitoes, flies, cootiea etc, even if they are on his/her body or clothes or not, and does not kill any moving creature, unless they cause him/her annoyance or if they are malefic and dangerous like snake, scorpion etc. An obligatory precaution is that the Muhrim does not fling the aforesaid insects from the body, and if he/she has done it involuntarily, then he/she should give some food to a poor person.