I am no strumpet, but of life as honest as you that thus abuse me.
kind gentlemen, let's go see poor Cassio dressed. Come mistress, you must tell's another tale. Emilia, run you to the citadel and tell my lord and lady what hath happed. will you go on afore?
this is the night that either makes me or fords me quite
as I! Fie upon thee!
and have you mercy too! I never did offend you in my life, never loved Cassio but with such general warranty of heaven as I might love. I never gave him token
By heaven, I saw my handkerchief in's hand. O perjured woman, thou dost stone my heart, and make's me call what I intend to do a murder, which I thought a sacrifice! I saw the handkerchief.
Cassio had just stabbed Roderigo, Iago stabbed Cassio, and Othello witnessed this as Iago being a true friend by killing Cassio.
Iago wants Emilia to go tell Othello and Desdemona what had happened knowing that she will find that Othello killed Desdemona.
Othello is now accusing Desdemona of Cheating on him with Cassio, and is threatening to kill her, while Desdemona is trying to tell Othello that she has never loves Cassio and never gave him the handkerchief.