降りかかる火の粉は払わねばならぬ
Idiom- 1you must protect yourself against any possible dangers ; you have to brush off sparks that fall onto you Translated by Jiyomi
Other writings and readings
降り懸かる火の粉は払わねばならぬ
expressions (phrases, clauses, etc.)
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JMdict entry 2417420. Source and licence.