...and they called it "Kalindaja"
From a Western point of view, it can be derived from the 5th mode of Harmonic Minor (or Major) while omitting the minor or Major 3rd, as the case may be, of its parent scale (in parenthesis, below).
As an example, the 5th mode of F Harmonic Min or Maj. = C - Db - E - F - G - (omit Ab or A) - Bb
This creates a hexatonic (6 note) scale.
The exact same tonal configuration is realized - as a triad pair - by coupling a Major triad with the minor triad one whole step below it (eg. C Maj & Bb min or C-E-G & Bb-Db-F).
From a Carnatic (South Indian) point of view, this janya raga or "derived scale" comes directly from the 14th Melakarta "Vakulabaranam", which is the Carnatic 7-note tonal equivalent of the Western 5th Mode of Harmonic Minor, as previously described.
Omitting the sixth scale degree, or "da", leaves us with our 6 note janya raga....and they called it Kalindaja (pronounced Ka - LIN - da - DSHA)...and therefore, so shall we.