in taj al-arus, v1/p211 khat'u or khata'u [with sukun or fat'hah on Taa] similar to waT'u/waTa'u ubayd ibn umayr recited it as khata'u [with the fath'hah] and khaTaa'u [with madd/elongation] hasan, sullami, ibrahim and a'amash have thus recited in surah al-nisa'a. --- it is the opposite of right, correct [Sawab]. "and he committed an error [akhTa'a]" in the qur'an: "there is no blame on you in matters which you make errors of judgement" ============ in lisan al-arab, under khata'a: khaTa'u: that which is not deliberate. khiT'u: that which is deliberate in the hadith: "homicide [death of a person caused inadvertently] - blood money for which is such-and-such" and this is opposite to 'deliberate' /`amd [killing]. that is if you kill a man by your action - but you did not intend to kill him; or you did not seek to kill him when you hit him. the mention of khaTa'a and khaTee'ah is mentioned a number of times in the hadith.