Seeking scriptural source for "all defilements temporarily suppressed when in jhana" I've seen statements like "When one is in jhana, all defilements are suppressed temporarily." Is there any scriptural source for this?
AN 9.36 Jhana Sutta:


  "'I tell you, the ending of the mental fermentations depends on the first jhana.' Thus it has been said. In reference to what was it said? There is the case where a monk, secluded (or "withdrawn") from sensuality, secluded from unskillful qualities, enters &amp; remains in the first jhana: rapture &amp; pleasure born of seclusion, accompanied by directed thought &amp; evaluation [in the following way:] He regards whatever phenomena there that are connected with form, feeling, perception, fabrications, &amp; consciousness, as inconstant, stressful, a disease, a cancer, an arrow, painful, an affliction, alien, a disintegration, an emptiness, not-self. He turns his mind away from those phenomena, and having done so, inclines his mind to the property of deathlessness [by thinking]: 'This is peace, this is exquisite — the resolution of all fabrications; the relinquishment of all acquisitions; the ending of craving; dispassion; cessation; Unbinding.'  


AN 4.123 adds:


  He savors that, finds satisfaction through that. 


AN 5.28 adds:


  He permeates and pervades, suffuses and fills this very body with the rapture and pleasure born from withdrawal. There is nothing of his entire body unpervaded by rapture and pleasure born from withdrawal.
  
  Just as if a skilled bathman or bathman's apprentice would pour bath powder into a brass basin and knead it together, sprinkling it again and again with water, so that his ball of bath powder — saturated, moisture-laden, permeated within and without — would nevertheless not drip; even so, the monk permeates, suffuses and fills this very body with the rapture and pleasure born of withdrawal. There is nothing of his entire body unpervaded by rapture and pleasure born from withdrawal...


This is why we sometimes say that kleshas are temporarily suspended while in Jhana, because you "withdraw" from them by "turning your mind away" from their objects - all the worldly pursuits, goals, and judgements.

Again, I insist: it's NOT like Jhana happens by itself and as its sideeffect brings all these good qualities. We deliberately turn away ("withdraw") from negative thoughts and we deliberately generate positive thoughts.

So it is misleading to say "all defilements are temporarily suppressed when in jhana" - we deliberately put them aside, we deliberately generate bliss - and that's how we enter jhana.