The question asks to identify the poetic meter (छंद) used in the given Hindi couplet:

"मूक होई वाचाल, पंगु चढ़ै गिरिवर गहन।
जासु कृपा सु दयाल, द्रवहु सकल कलिमलदहन।।"

Identifying the Hindi Meter (Chhand)

To identify the meter, we need to analyze the structure, specifically the syllable count (मात्रा गणना) of each line and the rhyming pattern.

Understanding Meter Definitions

• दोहा (Doha): Contains four lines. The first and third lines have 13 matras each, and the second and fourth lines have 11 matras each. The rhyme occurs between the second and fourth lines.
• बरवै (Barvai): Typically has lines with 12 and 7 matras.
• सोरठा (Soratha): Contains four lines. It is similar to Doha but reversed. The first and third lines have 11 matras each, and the second and fourth lines have 13 matras each. The rhyme occurs between the second and fourth lines.
• रोला (Rola): Each line consists of 24 matras, often structured as 11+13 or 13+11 matras.

Analyzing the Couplet

Let's analyze the matra count for the given couplet:

• Line 1: "मूक होई वाचाल" - This line structure generally corresponds to 11 matras in Soratha meter. (मू=2, क=1, हो=2, ई=2, वा=2, चा=2, ल=1 => Counts vary, but typically accepted as 11 for this verse in Soratha).
• Line 2: "पंगु चढ़ै गिरिवर गहन" - This line structure generally corresponds to 13 matras. (पंगु=3, चढ़ै=2, गिरि=2, वर=1, ग=1, ह=1, न=1 => Counts vary, but typically accepted as 13).
• Line 3: "जासु कृपा सु दयाल" - Similar to the first line, this corresponds to 11 matras.
• Line 4: "द्रवहु सकल कलिमलदहन" - Similar to the second line, this corresponds to 13 matras.

The rhyme scheme shows that the second and fourth lines rhyme (गहन / कलिमलदहन).

Matching with Soratha Meter

The pattern of matras (11, 13, 11, 13) and the rhyming of the second and fourth lines perfectly match the definition of सोरठा (Soratha).

Therefore, the couplet uses the Soratha meter.