Waalaikumsalam, you are glorified Allah in Islam is forbidden bribe. Because it would bear injustice and inequality. The practice of bribing bribe is a grave sin are forbidden Allah SWT. Perpetrators and those who turn bribed alike will get a curse. As word of the Prophet Muhammad:
God cursed the briber, the bribed and intermediaries both? (Narrated by At-Tabrani)
But if a person works with the sweat and had an affair when terprangkap with bribe bribe, does not mean that all the results of his labor is forbidden. More precisely it is unlawful to bribe, but keharamannya not have to infect the fruits of his work as a whole. Because after all, someone has been working with sweat. And it should be appreciated as a work. So she remained entitled to the efforts that have been commercialized.
Moreover, when the capabilities are sufficient conditions so that neither side has been wronged. Another case when a man who had absolutely no requirement to occupy a kind of work, and then bribed and oppressed of all the above non-becusan himself. Of course this is clearly illegitimate.
Hopefully God cleanse our property Amin