Mga Sanggunian sa Talmud para sa Mga Kawikaan 24:17: Megillah, Nedarim & Berakhot

After he had trimmed his hair he put the garments on him, and said to him, Mount and ride. He replied: I am not able, as I am weak from the days of fasting. So Haman stooped down and he mounted [on his back]. When he was up he kicked him. He said to him: Is it not written in your books, “Rejoice not when your enemy fails” (Proverbs 24:17)? He replied: That refers to an Israelite, but in regard to you it is written, “And you shall step on their high places” (Deuteronomy 33:29).

Raba Yoma before he became sick told them [his students] "Don't tell anybody because it is bad luck". Afterwards he told them "Go and announced it in the market".

The third of them commenced and said : He who is ill should not disclose the fact on the first day so as not to cause himself bad luck, but after that he may disclose it. As when Raba fell ill, on the first day he did not disclose it, but after that be said to his attendant, "Go, announce that Raba is ill. Let him who loves me pray on my behalf, and let him that hates me rejoice over my plight ; for it is written, 'Rejoice not when thine enemy falleth, and let not thy heart be glad when he stumbleth ; lest the Lord see it and it displease Him, and He turn away His wrath from him' (Prov. xxiv. 17 f.)."