As 'Ali ibn Abi Talib (may Allah be pleased with him) said, "There is no benefit in reading without reflection; likewise there is no benefit to be derived from rendering worship without knowledge."
Ebukwini ya Eklesiasta, Solomoni u ye emahlweni a ku: "Ndzi tlhele ndzi swi vona ehansi ka dyambu leswaku lava va nga ni rivilo lerikulu a va hluli emphikizanweni, hambi ku ri lava va nga ni matimba a va hluli enyimpini, ni lavo tlhariha a va swi kumi swakudya, hambi ku ri lava twisisaka a va na rona rifuwo, ni lava va nga ni vutivi a va kombiwi tintswalo."